In the present report, attempts were made to improve the surface roughness of ground workpiece due to oscillating a wheel by numerical control (NC) function with a machining center. An adequate NC programming for oscillation grinding with a machining center is examined. As a result, it is an effective method to improve the surface roughness in creep feed grinding by a small diameter wheel. In this case, small amplitude of oscillation also makes it feasible to improve the surface roughness after grinding.
